Enable seding of 14 channels on spektrumsat.
v3.5.4 - Initial SBUS output code
Fix SBUS output scaling.
SBUS/spektrum on TX side (untested)
Disable hex backup/restore to save space.
Merge branch 'master' into 30-mavlink
Little refactoring..
Merge branch 'master' into 30-mavlink

Conflicts:
	TX.h